*{  
    margin: 0;  
    padding: 0;  
    text-decoration: none;  
    list-style: none;
}  
.clearfix::after{
    content: "";
    display: block;
    visibility: hidden;
    clear: both;
}
/* 标题 */
.blogname{
    width:1200px;
    margin: 0 auto;
}
.blogname p{
    height: 100px;
    line-height: 100px;
    font-size: 36px;
    text-align: center;
    float: left;
    color: #000;
}
/* 导航栏 */
.nav{
    width: 100%;
    /* background-color:#8CC7E4; */
    height: 50px;
    z-index: 99999;
    background-color: #fff;
    /* position: fixed; */
    /* top: 0; */
}
.nav-con{
    width: 1200px;
    margin: 0 auto;
}
/* .nav-con .blogname{
    width: 100px;
    height: 100px;
    line-height: 100px;
    font-size: 36px;
    text-align: center;
    float: left;
} */
.nav-con .nav1{
    float: left;
}
.nav1>li{
    /* margin-top: 100px; */
}
.nav li{
    width: 100px; 
    height: 50px;
    float: left;
    padding: 0 30px;
    background-color: #fff;
    /* border-bottom: 1px solid rgb(219, 219, 219); */
    /* border-bottom: 2px solid #000; */
}
.nav li{
    position: relative;
}
.nav li a{
    width: 100px;
    height: 50px;
    line-height: 50px;
    display: block;
    text-align: center;
    color: #636363;
    font-size: 14px;
    /* background-color: pink; */
}
.nav2{
    position: absolute;
    width: 100px; 
    top: 100%;
    left: 0;
    /* top: 52px; */
    /* left: 0; */
    /* display: none;  */
    visibility: hidden;
    opacity: 0;
    z-index: 999;
    transition: all 0.5s;
}
.nav3{
    position: absolute;
    width: 100px; 
    top: 0px;
    left: 100%;
    /* display: none;  */
    visibility: hidden;
    opacity: 0;
    z-index: 999;
    /* transition: all 0.5s; */
}
/* .nav li:hover{
    background-color: rgba(100, 100, 100, 1);
} */
.nav1 .shownav1{
    background-color: #222222;
}
.nav1 .shownav1>a{
    color: #fff;
}

/* 导航栏动画 */
.nav li:hover{
    cursor: pointer;
}
.nav1 .shownav1:hover .nav2{
    /* display: block; */
    visibility: visible;
    opacity: 1;
}
.nav2 .shownav2:hover .nav3{
    /* display: block; */
    visibility: visible;
    opacity: 1;
}

/* 轮播图 */
/* .slide img:nth-child(4)::after{
    content: "";
    width: 100%;
    height: 100%;
    background-color: #fff;
} */
.contain{
    position: relative;
}
.carousel{
    width: 100%;
    height: calc(100vh - 150px);
    overflow: hidden;
    position: relative;
}
.slide{
    width: 400%;
    position: absolute;
    top: 0;
    left: 0;
    transition: all 2s;
}
.slide .sl{
    float: left;
    width: 25%;
    height: calc(100vh - 150px);
    position: relative;
}
/* .slide .s1::after{
    content: "";
    width: 100%;
    height: 100%;
    position: absolute;
    background-color:rgba(255, 255, 255, 0.5);
    top: 0;
    left: 0;
} */
.sl img{
    width: 100%;
    height: calc(100vh - 150px);
    display: block;
    /* position: relative; */
    /* position: relative; */
}
.sl .cover{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 100%;
    height: 90%;
}
.sl h1{
    position: absolute;
    font-size: 36px;
    top: 45%;
    left: 50%;
    transform: translate(-50%,-50%);
    color: #fff;
}
.sl p{
    color:#fff;
    width: 100px;
    height: 30px;
    line-height: 30px;
    border: 1px solid #fff;
    border-radius: 15px;
    /* height: 50px; */
    text-align: center;
    position: absolute;
    top: 55%;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: rgba(255,255 ,255 ,0 );
}

.but button{
    position: absolute;
    width: 30px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    font-size: 32px;
    color: #fff;
    background-color:rgba(15, 25, 32, 0);
    outline: none;
    border: none;
    cursor: pointer;
}
.but .left{
    top: 50%;
    left: 10px;
    transform: translate(0,-50%);
}
.but .right{
    top: 50%;
    right: 10px;
    transform: translate(0,-50%);
}
.indicator {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translate(-50%,0);
}
.indicator li{
    float: left;
    background-color: #fff;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    margin: 0 10px;
    cursor: pointer;
    transition: all 2s;
}
.indicator .li-active{
    background-color: #636363;
}



/* 主要内容 */
.main{
    width: 100%;
    height: 600px;
    margin-top: 200px;
    background: url(../img/学习资料.jpg)no-repeat 30% 70%;
    /* background-color: #636363; */
}
.main-con{
    width: 1200px;
    margin: 0px auto;
    position: relative;
    /* background-color: #fff; */
}
.main-con-title{
    /* margin: 100px 0 0; */
    border-bottom: 1px solid #c4c4c4;
    padding-top: 100px;
    /* background-color: #fff; */
}
.main-con-title-cn{
    font-size: 48px;
    text-align: center;
    color: #000;
    margin: 0 0 10px;
}
.main-con-title-en{
    font-size: 18px;
    text-align: center;
    color: #c4c4c4;
    margin-bottom: 20px;
}
.options{
    width: 1200px;
    height: 100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    /* background-color: pink; */
}
.options li{
    width: 120px;
    height: 50px;
    border-radius: 25px;
    background-color: rgb(111, 177, 155);
    color: #fff;
    text-align: center;
    line-height: 50px;
    transition: all 0.3s;
}
.options .current{
    background-color: rgb(61, 97, 85);
}
.op-main{
    background-color: #fff;
    box-shadow: 0 0 5px rgb(0, 0, 0);
}





.op1,.op3,.op4{
    height: 600px;
    background-color: #fff;
}




/* 菜谱部分 */
.op-main{
    padding: 50px 50px;
}
.op2 .op2title{
    font-size: 36px;
    color: #000;
    height: 60px;
    line-height: 60px;
    padding-left: 30px;
}
.pizza,.qiehe,.jiangxiangbing{
    margin-bottom: 100px;
    /* border: 1px solid #000; */
}
.pizza p,
.jiangxiangbing p{
    text-align: right;
    /* padding:0 30px 30px 0; */
    padding-bottom: 30px;
}
.pizza a,
.jiangxiangbing a{
    text-align: right;
    /* padding: 0 30px 0 0; */
} 
.pizza .icon,
.jiangxiangbing .icon{
    float: right;
}
.qiehe .icon{
    float: left;
}
.pizza .detail,
.jiangxiangbing .detail{
    float: right;
}
.pizza img,
.jiangxiangbing img{
    float: left;
}
.qiehe img{
    float: right;
}
.qiehe p{
    /* padding: 0 0 30px 30px; */
    padding-bottom: 30px;
}
.qiehe a{
    /* padding: 0 0 0 30px; */
}
.qiehe .detail{
    float: left;
}
.op2 img{
    width: 400px;
    height: 250px;
    display:block;
}
.op2 p{
    font-weight: 600;
    font-size: 48px;
}
.op2 a{
    color: #636363;
    font-size: 18px;
    display: block;
}
.op2 .icon{
    /* display: flex;
    justify-content: space-evenly;
    align-items: center; */
    /* text-align: center; */
    /* width: 100%; */
    height: 40px;
    line-height: 40px;
}
.detail i{
    /* padding: 20px 25px; */
    padding: 0 5px;
    font-size: 20px;
}
.detail i:hover{
    color: rgb(173, 19, 19);
}